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    <title>ShellCheck: SC2195 – This pattern will never match the case statement's word. Double check them.</title>
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    <h1>SC2195 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2195">See this page on GitHub</a>
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    <h2
id="this-pattern-will-never-match-the-case-statements-word-double-check-them">This
pattern will never match the case statement's word. Double check
them.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2195.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="cf">case</span> <span class="st">&quot;</span><span class="va">$var</span><span class="st"> &quot;</span> <span class="kw">in</span>      <span class="co"># Trailing space</span></span>
<span id="cb1-2"><a href="SC2195.html#cb1-2" aria-hidden="true" tabindex="-1"></a>  <span class="ss">value</span><span class="kw">)</span> <span class="bu">echo</span> <span class="st">&quot;Match&quot;</span></span>
<span id="cb1-3"><a href="SC2195.html#cb1-3" aria-hidden="true" tabindex="-1"></a><span class="cf">esac</span></span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2195.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="cf">case</span> <span class="st">&quot;</span><span class="va">${var}</span><span class="st">&quot;</span> <span class="kw">in</span>     <span class="co"># No trailing space</span></span>
<span id="cb2-2"><a href="SC2195.html#cb2-2" aria-hidden="true" tabindex="-1"></a>  <span class="ss">value</span><span class="kw">)</span> <span class="bu">echo</span> <span class="st">&quot;Match&quot;</span></span>
<span id="cb2-3"><a href="SC2195.html#cb2-3" aria-hidden="true" tabindex="-1"></a><span class="cf">esac</span></span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p>ShellCheck has detected that one of the patterns in a
<code>case</code> statement will never match.</p>
<p>Often, this is due to mistakes in the case statement word that
results in unintended literal characters. In the problematic code,
there's a trailing space that will prevent the match from ever
succeeding.</p>
<p>For more examples of when this could happen, see <a
href="https://github.com/koalaman/shellcheck/wiki/SC2193">SC2193</a> for
the equivalent warning for <code>[[ .. ]]</code> statements.</p>
<p>Note that ShellCheck warns about individual patterns in a branch, and
will flag <code>*.png</code> in this example even though the branch is
not dead:</p>
<pre><code>case &quot;${img}.jpg&quot; in
  *.png | *.jpg) echo &quot;It&#39;s an image&quot;
esac</code></pre>
<h3 id="exceptions">Exceptions:</h3>
<p>None. If you encounter a bug and wish to <a href="ignore.html">ignore</a>
this warning, make sure the directive goes in front of the
<code>case</code> and not the individual branch.</p>
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    <p style='font-size: 80%'><a href="../index.html">ShellCheck</a> is a static analysis tool for shell scripts. This page is part of its documentation.</p>
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